[INFO] fetching crate polars 0.14.8...
[INFO] testing polars-0.14.8 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate polars 0.14.8 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate polars 0.14.8 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polars 0.14.8
[INFO] finished tweaking crates.io crate polars 0.14.8
[INFO] tweaked toml for crates.io crate polars 0.14.8 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 887834dd173b646792b15c35ab383e32dc36e728745199690b1da5556ee46b35
[INFO] running `Command { std: "docker" "start" "-a" "887834dd173b646792b15c35ab383e32dc36e728745199690b1da5556ee46b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "887834dd173b646792b15c35ab383e32dc36e728745199690b1da5556ee46b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887834dd173b646792b15c35ab383e32dc36e728745199690b1da5556ee46b35", kill_on_drop: false }`
[INFO] [stdout] 887834dd173b646792b15c35ab383e32dc36e728745199690b1da5556ee46b35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a09b87f42949cd33465c09154b85eca5f6717dd2cef454c25b23b9db841fa540
[INFO] running `Command { std: "docker" "start" "-a" "a09b87f42949cd33465c09154b85eca5f6717dd2cef454c25b23b9db841fa540", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling fast-float v0.2.0
[INFO] [stderr]    Compiling simdutf8 v0.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memmap2 v0.2.3
[INFO] [stderr]    Compiling lexical v5.2.2
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling flatbuffers v0.8.4
[INFO] [stderr]    Compiling multiversion v0.6.1
[INFO] [stderr]    Compiling arrow v4.4.0
[INFO] [stderr]    Compiling polars-arrow v0.14.8
[INFO] [stderr]    Compiling polars-core v0.14.8
[INFO] [stderr]    Compiling polars-io v0.14.8
[INFO] [stderr]    Compiling polars-lazy v0.14.8
[INFO] [stderr]    Compiling polars v0.14.8 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `polars-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name polars_core --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/polars-core-0.14.8/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="chrono"' --cfg 'feature="docs"' --cfg 'feature="dtype-date32"' --cfg 'feature="dtype-date64"' --cfg 'feature="lazy"' --cfg 'feature="performant"' --cfg 'feature="plain_fmt"' --cfg 'feature="prettytable-rs"' --cfg 'feature="private"' --cfg 'feature="regex"' --cfg 'feature="sort_multiple"' --cfg 'feature="temporal"' --cfg 'feature="zip_with"' -C metadata=0cd6d6ffe501493a -C extra-filename=-0cd6d6ffe501493a --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ahash=/opt/rustwide/target/debug/deps/libahash-f6904e3fd9f685c5.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-e183bb2174e494e4.rmeta --extern arrow=/opt/rustwide/target/debug/deps/libarrow-b512d5d229477dac.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-dbcfa671768889ba.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-d0924f4e645949b5.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-78c60b588458e652.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-f67718dd40129317.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-d061f39f1a44c59b.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-02aeb857270eb57b.rmeta --extern polars_arrow=/opt/rustwide/target/debug/deps/libpolars_arrow-561d240cbe6a879f.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-b8c02cd7a6ee3c18.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-7513acc596387765.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-14edb7dff9ca13a5.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-eba99dceb53162fd.rmeta --extern unsafe_unwrap=/opt/rustwide/target/debug/deps/libunsafe_unwrap-cd612ae32ae7eacc.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "a09b87f42949cd33465c09154b85eca5f6717dd2cef454c25b23b9db841fa540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09b87f42949cd33465c09154b85eca5f6717dd2cef454c25b23b9db841fa540", kill_on_drop: false }`
[INFO] [stdout] a09b87f42949cd33465c09154b85eca5f6717dd2cef454c25b23b9db841fa540